condition mean min max 4 h after light 24.1326975 16.669446 31.595949 8 h after light 20.350831499999998 16.582597 24.119066 12 h after light 22.4777785 20.161526 24.794031 4 h after dark 15.083157 12.634758 17.531556 8 h after dark 11.329364 10.866676 11.792052 12 h after dark 13.029391 13.029391 13.029391